{"id":4462,"date":"2026-10-06T12:09:27","date_gmt":"2026-10-06T10:09:27","guid":{"rendered":"https:\/\/funosa.com\/elevators-precision-safety-and-repeatability\/"},"modified":"2026-10-30T11:30:00","modified_gmt":"2026-10-30T10:30:00","slug":"elevators-precision-safety-and-repeatability","status":"publish","type":"post","link":"https:\/\/funosa.com\/en\/elevators-precision-safety-and-repeatability\/","title":{"rendered":"Elevators: precision, safety, and repeatability"},"content":{"rendered":"\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-d28d8a92 wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--50);padding-top:var(--wp--preset--spacing--80);padding-right:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\"><div class=\"yoast-breadcrumbs\"><span><span><a href=\"https:\/\/funosa.com\/en\/\">Home<\/a><\/span> \u00bb <span class=\"breadcrumb_last\" aria-current=\"page\">Elevators: precision, safety, and repeatability<\/span><\/span><\/div>\n\n\n<div class=\"wp-block-group is-stacked-on-mobile is-layout-grid wp-container-core-group-is-layout-17a3dd11 wp-block-group-is-layout-grid\" style=\"padding-top:0\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"><h1 class=\"wp-block-post-title\">Elevators: precision, safety, and repeatability<\/h1>\n\n\n<p>For purchasing managers and engineering leads at elevator manufacturers, iron casting components in the drive system are not generic parts. <strong>Motor housings, traction pulleys, and gearbox casings<\/strong> are critical elements that influence the <strong>safety, comfort, noise levels, energy efficiency, and long-term reliability<\/strong> of the installation.<\/p>\n\n\n\n<p>This article explains the specific requirements of <strong>casting for elevators<\/strong> from a technical and procurement perspective, with practical criteria for selecting materials, designs, and foundry partners for these key components.<\/p>\n<\/div>\n\n\n<figure class=\"wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/funosa.com\/wp-content\/uploads\/2026\/07\/Ascensores-precision-seguridad-y-repetibilidad.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"\" style=\"object-fit:cover;\" srcset=\"https:\/\/funosa.com\/wp-content\/uploads\/2026\/07\/Ascensores-precision-seguridad-y-repetibilidad.jpg 768w, https:\/\/funosa.com\/wp-content\/uploads\/2026\/07\/Ascensores-precision-seguridad-y-repetibilidad-300x200.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure><\/div>\n<\/div>\n\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-9d01c190 wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--80);padding-left:var(--wp--preset--spacing--50)\">\n<h2 class=\"wp-block-heading\" id=\"2-seleccin-de-material-hierro-gris-vs-hierro-nodul\">1. Why Casting Quality Matters in Elevator Drive Systems<\/h2>\n\n\n\n<p>Elevator systems operate under strict safety standards (such as the European framework represented by <a href=\"https:\/\/www.ela-aisbl.eu\/\">ELA<\/a> and national regulations like ITC AEM 1 in Spain) and high expectations for comfort and reliability. Typical requirements include: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High dimensional precision for smooth movement, correct alignment, and adequate traction.<\/li>\n\n\n\n<li>Low transmission of vibrations and noise to the cabin and structure.<\/li>\n\n\n\n<li>Stable mechanical properties over a long service life and many start-stop cycles.<\/li>\n\n\n\n<li>Compliance with international and regional safety standards.<\/li>\n\n\n\n<li>Traceability and documentation for audits, type examinations, and approvals.<\/li>\n<\/ul>\n\n\n\n<p>For cast components such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Motor housings<\/strong> \u2013 which support and align the motor and drive system.<\/li>\n\n\n\n<li><strong>Traction sheaves<\/strong> \u2013 which transmit torque to ropes or belts.<\/li>\n\n\n\n<li><strong>Gearbox housings<\/strong> \u2013 which protect gears and bearings and ensure correct alignment.<\/li>\n<\/ul>\n\n\n\n<p>these requirements translate into:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tight tolerances on critical interfaces (mounting surfaces, bore diameters, rope grooves in sheaves).<\/li>\n\n\n\n<li>Controlled microstructure and mechanical properties.<\/li>\n\n\n\n<li>Consistent quality across production batches.<\/li>\n<\/ul>\n\n\n\n<p>For a purchasing manager or an engineering lead at an elevator OEM, this means that <strong>material selection, design support, and foundry capability<\/strong> are as important as commercial terms.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-seleccin-de-material-hierro-gris-vs-hierro-nodul\">2. Material Selection: Gray Iron vs. Ductile Iron in Key Elevator Components<\/h2>\n\n\n\n<p>Most <strong>elevator casting<\/strong> applications in the drive chain use <strong>gray iron<\/strong> or <strong>ductile iron<\/strong>. The choice depends on the component&#8217;s function, the loads it must withstand, and noise and vibration requirements. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"21-hierro-gris\">2.1 Grey cast iron<\/h3>\n\n\n\n<p>Grey cast iron is often used for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Components where vibration damping and noise reduction are important.<\/li>\n\n\n\n<li>Parts primarily subjected to compressive loads with little impact.<\/li>\n\n\n\n<li>Applications where cost efficiency and machinability are priorities.<\/li>\n<\/ul>\n\n\n\n<p>Typical uses in elevator systems:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gearbox housings where low noise transmission is valuable.<\/li>\n\n\n\n<li>Non-critical structural components with primarily static loads.<\/li>\n\n\n\n<li>Parts where dimensional stability and damping are key.<\/li>\n<\/ul>\n\n\n\n<p><strong>Advantages:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Good machinability.<\/li>\n\n\n\n<li>Excellent damping capacity (reduces noise and vibrations).<\/li>\n\n\n\n<li>Competitive cost.<\/li>\n<\/ul>\n\n\n\n<p><strong>Limitations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lower tensile strength and elongation.<\/li>\n\n\n\n<li>Lower impact and fatigue strength compared with ductile iron.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"22-hierro-nodular-dctil\">2.2 Nodular (ductile) cast iron<\/h3>\n\n\n\n<p>Nodular cast iron is often preferred for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Structural and load-bearing components.<\/li>\n\n\n\n<li>Parts subjected to dynamic loads, impacts, or fatigue.<\/li>\n\n\n\n<li>Applications where safety and reliability are critical.<\/li>\n<\/ul>\n\n\n\n<p>Typical uses in elevator systems:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Traction sheaves subjected to cyclic rope loading and wear.<\/li>\n\n\n\n<li>Motor housings and support structures in high-performance systems.<\/li>\n\n\n\n<li>Components in traction and door drive systems that experience dynamic loads.<\/li>\n<\/ul>\n\n\n\n<p><strong>Advantages:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Higher tensile strength and elongation than grey cast iron.<\/li>\n\n\n\n<li>Better impact and fatigue resistance.<\/li>\n\n\n\n<li>A good combination of strength, toughness and machinability.<\/li>\n<\/ul>\n\n\n\n<p><strong>Limitations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Generally more expensive than grey cast iron.<\/li>\n\n\n\n<li>Requires more controlled production and quality processes.<strong>Rule of thumb:<\/strong> For traction sheaves and heavily loaded motor housings or gearbox housings, ductile iron is usually the best choice for <strong>elevator castings<\/strong>, especially when safety and long service life are critical.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-precisin-y-repetibilidad-lo-que-realmente-necesi\">3. Precision and Repeatability: What Elevator OEMs Really Need<\/h2>\n\n\n\n<p>In elevator applications, precision and repeatability are not optional. They directly affect: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Smoothness of cabin movement and passenger comfort.<\/li>\n\n\n\n<li>Noise levels transmitted to the building.<\/li>\n\n\n\n<li>Wear of ropes, sheaves, gears, and bearings.<\/li>\n\n\n\n<li>Long-term alignment and stability of the drive system.<\/li>\n<\/ul>\n\n\n\n<p>Key aspects that purchasing and engineering teams should look for in a foundry:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"51-capacidad-tcnica\"><strong><strong><strong>3.1 Dimensional Precision and Tolerances<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ability to maintain tight tolerances on critical interfaces (mounting surfaces, bores, rope grooves in sheaves).<\/li>\n\n\n\n<li>Controlled shrinkage and distortion during solidification and cooling.<\/li>\n\n\n\n<li>Consistent machining results across batches.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"51-capacidad-tcnica\"><strong><strong>3.2 Microstructure and Mechanical Consistency<\/strong><\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Controlled graphite and matrix morphology.<\/li>\n\n\n\n<li>Stable hardness and tensile properties across batches.<\/li>\n\n\n\n<li>Low defect rates (porosity, inclusions, shrinkage) in critical areas.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"51-capacidad-tcnica\"><strong>3.3 Process Control and Traceability<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Documented process parameters for each batch.<\/li>\n\n\n\n<li>Clear inspection plans and control records.<\/li>\n\n\n\n<li>Ability to trace each component back to its pour and heat treatment.<\/li>\n<\/ul>\n\n\n\n<p>A foundry that masters these aspects can help elevator OEMs reduce noise, improve comfort, and decrease maintenance costs over the installation&#8217;s lifetime, which is especially relevant in the context of <strong>modernizing the elevator fleet<\/strong> under regulations like ITC AEM 1.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-seguridad-normativas-y-documentacin\">4. Safety, Regulations, and Documentation<\/h2>\n\n\n\n<p>Elevator components are subject to strict safety and regulatory requirements. In Europe, organizations like the <strong>European Lift Association (ELA)<\/strong> represent the sector and promote quality, safety, and high technical standards. At the national level, regulations such as <a href=\"https:\/\/www.boe.es\/buscar\/act.php?id=BOE-A-2024-7258\"><strong>ITC AEM 1<\/strong><\/a> in Spain (approved in 2024 and progressively entering into force) regulate the commissioning, modification, maintenance, and inspection of elevators, including requirements that indirectly affect component suppliers (traceability, documentation, safety cases).  <\/p>\n\n\n\n<p>From a purchasing perspective, the following elements are critical:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Certified quality management (e.g., ISO 9001).<\/li>\n\n\n\n<li>Clear inspection plans and control records.<\/li>\n\n\n\n<li>Ability to provide documentation for audits, type examinations, and customer approvals.<\/li>\n\n\n\n<li>Experience working with clients in regulated industries.<\/li>\n<\/ul>\n\n\n\n<p>For buyers and engineers at elevator companies like TKE, Otis, Orona, and Schindler, this documentation is not a mere formality. It is part of the product&#8217;s safety case and a key factor in supplier selection, especially for drive system components. <\/p>\n\n\n\n<p><strong>External link suggestions:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Link to the ELA website as an industry reference:\n<ul class=\"wp-block-list\">\n<li>\u201cFor an overview of the European elevator industry and its priorities in safety and sustainability, consult the European Lift Association (ELA).\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Link to resources on modernization and regulations (e.g., FEEDA or summaries of national regulations):\n<ul class=\"wp-block-list\">\n<li>\u201cFor information on when and why to modernize elevators and the impact of new regulations, consult resources from FEEDA and technical instructions like ITC AEM 1.\u201d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-criterios-de-compra-cmo-evaluar-una-fundicin-par\">5. Purchasing Criteria: How to Evaluate a Foundry for Elevator Components<\/h2>\n\n\n\n<p>From a purchasing and category management perspective, the following criteria help reduce risk and improve total cost of ownership in <strong>elevator castings<\/strong>:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"51-capacidad-tcnica\">5.1 Technical Capability<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ability to work with both <a href=\"https:\/\/funosa.com\/en\/\">gray iron and ductile iron<\/a>.<\/li>\n\n\n\n<li>Experience with similar components (motor housings, sheaves, gearbox housings).<\/li>\n\n\n\n<li>Ability to support design reviews and material selection.<\/li>\n<\/ul>\n\n\n\n<p><strong>What to ask:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Can you provide examples of similar components for demanding applications?<\/li>\n\n\n\n<li>How do you support customers in optimising materials and design?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"52-precisin-y-repetibilidad\">5.2 Precision and Repeatability<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Demonstrated ability to maintain tight tolerances on critical features.<\/li>\n\n\n\n<li>Proven capability in medium and long runs.<\/li>\n\n\n\n<li>Consistent quality across production batches.<\/li>\n<\/ul>\n\n\n\n<p><strong>What to ask:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>What are your typical tolerance ranges for critical dimensions (e.g., bores, mounting surfaces, rope grooves)?<\/li>\n\n\n\n<li>How do you monitor and control process stability over time?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"53-sistema-de-calidad-y-documentacin\">5.3 Quality System and Documentation<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Certified quality management (e.g., ISO 9001).<\/li>\n\n\n\n<li>Clear inspection plans and control records.<\/li>\n\n\n\n<li>Ability to provide documentation for audits and customer approvals.<\/li>\n<\/ul>\n\n\n\n<p><strong>What to ask:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>What is your defect rate and how is it tracked?<\/li>\n\n\n\n<li>Can you provide sample inspection reports and traceability documentation?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"54-coste-total-de-propiedad-tco\">5.4 Total Cost of Ownership (TCO)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Assessment not only of the unit price, but also of warranty costs, replacement frequency and internal load.<\/li>\n\n\n\n<li>Preference is given to suppliers who reduce risk and improve reliability, even if the initial price is slightly higher.<\/li>\n<\/ul>\n\n\n\n<p><strong>What to ask:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>How do you support customers in reducing field incidents, noise complaints, and premature wear?<\/li>\n\n\n\n<li>Can you share examples where improved casting has reduced the total cost for the OEM?<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-el-papel-de-funosa-para-los-oem-de-ascensores\">6. FUNOSA&#8217;s Role for Elevator OEMs<\/h2>\n\n\n\n<p><a href=\"https:\/\/funosa.com\/en\/contact\/\">Funosa<\/a> supports purchasing managers and engineering teams at elevator manufacturers with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Engineering capability<\/strong> to review and optimize designs for <strong>motor housings, traction sheaves, and gearbox housings<\/strong>.<\/li>\n\n\n\n<li>Experience with grey and nodular cast iron for demanding industrial sectors.<\/li>\n\n\n\n<li>A quality system aligned with <strong>ISO 9001<\/strong> and <strong>ISO 14001<\/strong> requirements.<\/li>\n\n\n\n<li>Focus on medium and large production runs, with consistent quality and traceability.<\/li>\n<\/ul>\n\n\n\n<p>For buyers and engineers at elevator companies, Funosa positions itself as a <strong>flexible and technically sound foundry partner in Europe<\/strong>, capable of supporting projects where precision, safety, and documentation are as important as the component itself. example <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>For purchasing managers and engineering leads at elevator manufacturers, iron casting components in the drive system are not generic parts. Motor housings, traction pulleys, and gearbox casings are critical elements that influence the safety, comfort, noise levels, energy efficiency, and long-term reliability of the installation. This article explains the specific requirements of casting for elevators [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":3982,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Elevators: precision, safety, and repeatability - Funosa<\/title>\n<meta name=\"description\" content=\"Guide for elevator manufacturers: precision, safety, and repeatability requirements for cast iron parts for elevators.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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